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Post by Zino on Jun 28, 2020 14:58:18 GMT -5
84 teikei jet needle 1 clip rich eliminated the hanging idle .
The 90 was just a touch to rich
With the 5 gram sliders full belt travel to within 2 mm
Pushed to 10,300 rpms with 5 grams 56 mph today
The Malossi BBK paired with the Yasuni R peaked below 10 K so The Athena Overshoots Up Top it by about 400-500 rpms .
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Post by Zino on Jun 28, 2020 15:16:33 GMT -5
Comparing the Cast Iron Malossi to the Athena Sport both paired with The Yasuni R .
The Athena out of the box is a notch quicker 0-40 mph then the Malossi with exhaust port raised a mm.
The Athena is also out reving the Malossi with power by 400-500 rpms so Top Speed is a little higher.
You could work Up the Malossi to match bottom end acceleration or the top speed but not both .
By dialing the squish closer and changing port timing .
The single ring advantage makes it alot more Revvy Which gives a notch more power .
It likes a half gram lighter weights than the Malossi .
Cast Iron has a longer Life and is more Forgiving to Carb Tuning Errors .
I change stuff every other year any ways so longevity is not as critical.
I had used a Athena in the past But that was with a Leo Vince The Yasuni R is a way better pipe to pair with.
The Yasuni Pair out Revs the Leo pairing by about 1000 rpms .
I Have 200 miles on the build so it has room to loosen up and rev higher .
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Post by aeroxbud on Jun 28, 2020 16:04:19 GMT -5
Great insight. The Yasuni is definitely worth The extra over a cheaper pipe. Even with just a 50cc cylinder I gained nearly 10mph more top speed over a next R.
The Malossi and Polini sport are all about longevity. Being 40% bigger than standard and a better design gives good performance over a very long time.
I would of thought the Athena is aimed more at the street race cylinder.
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Post by Zino on Jul 2, 2020 21:44:30 GMT -5
This is the variator holding tool so you dont have to use a impact and wreck your crankshaft from overzealousness I bought all these tools when I just needed to be add something to qualify for free shipping .They work extremely well and are well worth getting ahold of.  |
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Post by Zino on Jul 2, 2020 21:45:51 GMT -5
This is the clutch holding tool I use the block of wood so the handle of the tool bites in as I torque it on and off  |
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Post by Zino on Jul 2, 2020 21:51:19 GMT -5
This is how to take off the clutch nut and put it on just a couple raps with the handle on cement Tightens the Nut right to the required torque   |
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Post by Kenho21 on Jul 2, 2020 22:38:58 GMT -5
This is how to take off the clutch nut and put it on just a couple raps with the handle on cement Tightens the Nut right to the required torque Where’d you get that clutch nut tool? Never seen that one before. I just use a gigantic crescent wrench lol. That would be much more ideal. |
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Post by aeroxbud on Jul 3, 2020 6:28:59 GMT -5
I have recently started using my clutch holding tool like yours. I used to use a strap wrench before. It got used so much it broke!
I found like you, you need to have the arm resting on something. Otherwise it's a right pain to undo the nut. Just not enough leverage.
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Post by Zino on Jul 3, 2020 7:50:07 GMT -5
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Post by aeroxbud on Jul 3, 2020 8:24:50 GMT -5
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Post by Zino on Jul 3, 2020 9:17:00 GMT -5
I had a gasket go bad It is on back order and will take a couple weeks . Pulled a image off line For a template My daughter used her editing skills to up size it so it matched up to the bolt holes . Used some paper hole punches to get the bolt holes right and Razor Blade Knife.  |
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Post by Zino on Jul 12, 2020 15:29:27 GMT -5
Been ripping around Over 300 miles on the build .
Buries the needle quick enough .
55-56 mph is where she is peaking out at .
I am still on the stock carb so That is what is holding me back.
The Yasuni R and Athena with the stock Carb peak at 10 k rpms with full belt travel.
I have the 11 to 1 gears .
So next rainy day stretch .
Is probably when I swap on the 19 mm dellorto carb on .
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Post by Zino on Jul 12, 2020 15:33:44 GMT -5
Did a little tuning with some genuine Mikuni Jets I had a cheap Glixal mikuni kit They are close but a 90 jet gurgles with glixal but runs right on the genuine mikuni. Here are 2 70s jets and one glixal the inside diameter is the same all the out specs are the same but the angle and depth of jets are different . The Glixals act about a 1/2 size bigger than they are .  |
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Post by Zino on Jul 12, 2020 15:44:32 GMT -5
After about a half dozen runs for those that run the stock carb and want to up grade jets .
And want to have more option than the yamaha jets .
Here is the order Leaner to Richer
Teikei =T
Mikuni =M
T80 ,T82 ,M85,T84 M87.5 ,M90
When I was tuning today the 84 teikei M 87.5 and Mikuni 90 all gave me the same top speed so I went with the Mikuni 90 for safety .
The Mikuni 87.5 is just slightly richer than the Teikei 84 .
I found the genuine Mikuni 85 to be just a notch leaner than the 84 Teikei but they were close .
I got the genuine mikuni jets through JETSRUS.com.
If you buy Knock off Mikuni Jets you are going to need to buy a lot wider range to allow for quality in casting differences .
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ingram
Scoot Enthusiast
Posts: 100
Location: Houston, TX
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Post by ingram on Jul 13, 2020 13:07:39 GMT -5
It has been so long since I have run a stock pipe with a kit . I forgot how torquey the stock pipes are at low rpms . A quick and easy build for a 2002 -2005 Zuma That Buries the needle Swap on a sport kit cast iron malossi polini top performance stage 6 Keep the stock pipe up jet the stock carb 84 jet lower the needle a clip Get a sport variator . Swap in some Gears to get you to 11 to 1 . After she is dialed in you will Break 50 mph and have plenty of down low torque . This is the way they should have made the Stock Zuma IMHO. 400 bucks gets you To 50 mph if you did it on your own. I just got a 2005 Zuma bone stock with only 550 miles on it. Hitting about 38mph max and looking for upgrades. Your above advice looks right around what I am looking for. Before finding this great thread and forum I ordered the Technigas Silent Pro pipe (unrestricted), Athena 70cc kit, Zuma performance carb kit with 95 jet, and Minarelli performance air box setup for 70cc sport from Scootertronics. Now I am thinking I should have just went with a Malossi cast iron instead of the Athena kit so I can have more forgiveness on the tuning side of things and with the Silent Pro pipe I probably won't get full benefits from the Athena kit anyway. Any thoughts on this? Now it looks like next I need to get a variator and gears. Looking to get the Malossi multi var but what gears should I look at to get me 11 to 1? |
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